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run SFC after cd boot from command prompt


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#1 b.groves

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Posted 25 December 2013 - 09:23 PM

Techs,

I have a WXP Pro pc with BSOD at startup: STOP: 0x0000007E kdcom.dll.  It will not boot in Safe Mode or Last Known Good config.  I want to run SFC /scannnow  to repair system files.  I have to boot from the Dell Reinstall OS cd.  I go into Windows Repair mode.  I select C:\windows.  Admin psw is blank.  At the command prompt, I type c:\windows\ sfc /scannow and I get the error 

"command not recognized".  I copy and rename sfc.ex_ from cd d:\i386 to c:\ .  I try again from root of c:\ .  Same error, "command not recognized".  I am not sure what to try next to get SFC to work .  What can I do to run sfc from command prompt in Repair mode or need another suggestion.  Thanks. 



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#2 cryptodan

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Posted 25 December 2013 - 09:52 PM

What happened prior to this issue?

#3 b.groves

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Posted 25 December 2013 - 09:58 PM

Not sure.  Kids say "it just quit working".



#4 cryptodan

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Posted 25 December 2013 - 09:59 PM

I would perform the following:

chkdsk /f c:

Answer Yes to the question and reboot. See if it finds any hard drive errors.

#5 b.groves

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Posted 25 December 2013 - 10:05 PM

ok I'm still at command prompt from CD boot in repair Mode.  I type

c:\windows\system32> sfc /scannow /offbootdir=c:\  /offwindir=c:\windows and I get the same error

This command is not recognized  Type HELP for a list of supported commands.  Any suggestions? Thanks.



#6 b.groves

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Posted 25 December 2013 - 10:07 PM

Thanks for the reply.  I did run Chkdsk /r/p and there were no drive errors.  My gut feel is we have got a virus but I cant even get the pc up to start inoculation.



#7 cryptodan

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Posted 25 December 2013 - 10:11 PM

can you do the chkdsk /f

#8 b.groves

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Posted 26 December 2013 - 08:51 AM

Not sure if it is a version issue or not but chkdsk /f comes back with "the parameter is not valid"  try /? for help".. I do that and the only parms I see are /P and /R (recover bad sectors).  Thanks,



#9 hamluis

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Posted 26 December 2013 - 09:18 AM

From the command prompt...

 

Run the command thusly:  chkdsk /r, there is no need to specify the Windows partition since it's the default for chkdsk /r.  The chkdsk /p command is not what you want to run and chkdsk /f is included in the chkdsk /r command..

 

Louis



#10 b.groves

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Posted 26 December 2013 - 01:15 PM

Chkdsk /r has completed .  There were 3 sentences where it said "performing additional checking or recovery".  Finished normally after that.  Do you guys agree with sfc /scannow as next step?  If so can it be ran from the boot cd? If yes, how?

Thanks.



#11 hamluis

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Posted 26 December 2013 - 01:41 PM

It's not likely that any Dell CD would have the cvapability of running sfc /scannow, IMO.  The command relies on access to system files that are within Windows or on the MS Genuine XP install CD.  Unless your "Dell CD" is the equivalent...you won't be able to run sfc /scannow.

 

http://en.community.dell.com/support-forums/software-os/f/3524/t/19429526.aspx

 

Louis


Edited by hamluis, 26 December 2013 - 01:44 PM.


#12 b.groves

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Posted 26 December 2013 - 04:17 PM

I should be able to locate a MSDN iso download image of WXP Pro cd.  Do you think it would have all it needs to run sfc /scannow ?

Thanks.



#13 cryptodan

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Posted 26 December 2013 - 04:25 PM

Here is some information pertaining to chkdsk /f

http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/chkdsk.mspx?mfr=true

#14 b.groves

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Posted 26 December 2013 - 04:38 PM

Not sure what to say other than maybe the CHKDSK version on the cd I boot from is a reduced instruction version.  Its only taking /P /R as parameters.  Thanks.



#15 cryptodan

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Posted 26 December 2013 - 04:45 PM

The chkdsk on the CD should be the full version not a stripped down one. Seems to me like you will need to acquire an actual XP CD to do this.




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